Best Tech Stack for Startups in 2025

Choosing Your Startup Tech Stack

The wrong tech stack leads to technical debt, slow development, and scaling problems. Here is what we recommend in 2025.

For Web Applications

Frontend: Next.js with TypeScript. Server components, excellent SEO, great developer experience.

Backend: Node.js with Express or Fastify. Alternatively, Python with FastAPI for AI-heavy apps.

Database: PostgreSQL for relational data. Add Redis for caching. MongoDB only if you truly need document storage.

Hosting: Vercel for frontend, AWS or Railway for backend. Start with managed services.

For Mobile Applications

Cross-Platform: React Native or Flutter. Both are mature and production-ready.

Native: Swift for iOS, Kotlin for Android. Only if performance is critical.

For AI/ML Features

APIs: OpenAI, Anthropic Claude, or Google Gemini. Do not build your own models unless you have a data moat.

Vector Database: Pinecone or Supabase pgvector for RAG applications.

Common Mistakes to Avoid

• Over-engineering early (you do not need microservices on day one)
• Choosing tech because it is trendy, not because it fits
• Not considering hiring availability for your stack
• Ignoring operational complexity

Our Default Stack

For most startups, we recommend: Next.js + Node.js + PostgreSQL + Vercel/AWS. It is proven, scalable, and has excellent developer availability.